Speaking about the storyline, Isobel Steele – who plays Liv – explained: "Out of the two girls, Liv thinks about this more than Gabby. Gabby is very immature in that sense, while Liv has a better perspective of how things can go wrong and how other people can be affected.

"I don't think Liv wants to carry out this prank at all, but she does feel a lot of pressure from Gabby because she's got a nasty streak to her. She does it more just to fit in and please Gabby than anything else. She gets pushed into it, but the consequences are really bad.

"In the end, Gabby tries to take the fall for what Liv did because she feels bad for the argument they had recently."

Discussing the fallout, Isobel continued: "This has quite the effect on Liv. She feels overwhelming guilt that she's done this and no-one knows about it.

"Liv does struggle with it, but it leads to her drinking more than usual. Her unhealthy habits affect her massively, because she feels so bad about it. Lisa is obviously a big part of Liv's life – she has taken her in before and helped her through some stuff.

"There's just this massive betrayal, especially as she can hear her family talk about how much they hate Gabby for what she did when they think it was Gabby. It plays on Liv's mind and she struggles with it."

How long will Liv let Gabby carry on taking the full blame?

Emmerdale airs the hour-long special on Tuesday, March 13 at 7pm on ITV.